CustomPDGParser.cc

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#include <SimG4Core/CustomPhysics/interface/CustomPDGParser.h>
//#include<iostream>
#include <cstdlib>

/*CustomPDGParser::CustomPDGParser(int pdgCode) : m_pdgCode(pdgCode)
{

}*/

bool CustomPDGParser::s_isRHadron(int pdg) 
{
 int pdgAbs=abs(pdg);
 return ( (pdgAbs % 100000 / 10000 == 9) ||  (pdgAbs % 10000 / 1000 == 9) || s_isRGlueball(pdg) );
}

bool CustomPDGParser::s_isstopHadron(int pdg) 
{
 int pdgAbs=abs(pdg);
 return ( (pdgAbs % 10000 / 1000 == 6) ||  (pdgAbs % 1000 / 100 == 6)  );
}

bool CustomPDGParser::s_issbottomHadron(int pdg) 
{
 int pdgAbs=abs(pdg);
 return ( (pdgAbs % 10000 / 1000 == 5) ||  (pdgAbs % 10000 / 100 == 5)  );
}

bool CustomPDGParser::s_isSLepton(int pdg)
{
 int pdgAbs=abs(pdg);
 return (pdgAbs / 100 % 10000 == 0 && pdgAbs / 10 % 10 == 1);
}

bool CustomPDGParser::s_isRBaryon(int pdg)
{
 int pdgAbs=abs(pdg);
 return  (pdgAbs % 100000 / 10000 == 9);

}

bool CustomPDGParser::s_isRGlueball(int pdg)
{
 int pdgAbs=abs(pdg);
 return  (pdgAbs % 100000 / 10 == 99);

}

bool CustomPDGParser::s_isDphoton(int pdg)
{                      
 int pdgAbs=abs(pdg);  
 return  (pdgAbs == 1072000);
                       
}

bool CustomPDGParser::s_isRMeson(int pdg)
{
 int pdgAbs=abs(pdg);
 return (pdgAbs % 10000 / 1000 == 9);

}

bool CustomPDGParser::s_isMesonino(int pdg)
{
 int pdgAbs=abs(pdg);
 return ((pdgAbs % 10000 / 100 == 6 ) || (pdgAbs % 10000 / 100 == 5));


}

bool CustomPDGParser::s_isSbaryon(int pdg)
{
 int pdgAbs=abs(pdg);
 return ((pdgAbs % 10000 / 1000 == 6) || (pdgAbs % 10000 / 1000 == 5));

}

bool CustomPDGParser::s_isChargino( int pdg )
{
  int pdgAbs = abs(pdg);
  return (pdgAbs == 1000024);  
}


double CustomPDGParser::s_charge(int pdg)
{
      float charge=0,sign=1;
      int pdgAbs=abs(pdg);
      if(pdg < 0 ) sign=-1;

      if(s_isSLepton(pdg))     //Sleptons
        {
      if(pdgAbs %2 == 0) 
          return 0;
           else
              return -sign;
    }

      if(s_isDphoton(pdg)){
        return charge;
      }
      if (s_isChargino(pdg)) {
    return sign;
      } 
      if(s_isRMeson(pdg))
      {
        std::vector<int> quarks = s_containedQuarks(pdg);
        if((quarks[1] % 2 == 0 && quarks[0] % 2 == 1)||(quarks[1] % 2 == 1 && quarks[0] % 2 == 0 )) charge=1;
        charge*=sign;       
       return charge;
      }

      if(s_isRBaryon(pdg))
      {
       int baryon = s_containedQuarksCode(pdg);
       for(int q=1; q< 1000; q*=10)
       {
        if(baryon / q % 2 == 0) charge+=2; else charge -=1; 
       }
        charge/=3;
    charge*=sign;
    return charge;
      }

      if(s_isMesonino(pdg))
    {
      int quark = s_containedQuarks(pdg)[0];
      int squark = abs(pdg/100%10);
      if (squark % 2 == 0 && quark % 2 == 1) charge = 1;
      if (squark % 2 == 1 && quark % 2 == 0) charge = 1;
      charge *= sign;
      if(s_issbottomHadron(pdg)) charge*=-1;
      return charge;
    }

      if(s_isSbaryon(pdg))
    {
      int baryon = s_containedQuarksCode(pdg)+100*(abs(pdg/1000%10));//Adding the squark back on
      for(int q=1; q< 1000; q*=10)
        {
          if(baryon / q % 2 == 0) charge+=2; else charge -=1; 
        }
      charge/=3;
      charge*=sign;
      if(s_issbottomHadron(pdg)) charge*=-1;
      return charge;
    }

return 0; 
}

double CustomPDGParser::s_spin(int pdg)
{
  // The PDG numbering is described in the Review of Particle Physics: 
  // "3. In composite quark systems (diquarks, mesons, and baryons) ...
  // the rightmost digit nJ = 2J + 1 gives the system's spin."  
  // Since this does not apply to SUSY / exotic particles, 
  // if the spin is important for the simulation 
  // it should be hard-coded based on PDG ID in this function.  
 int pdgAbs=abs(pdg);
 return pdgAbs % 10;    
}

 std::vector<int> CustomPDGParser::s_containedQuarks(int pdg)
{
 std::vector<int> quarks;
 for(int i=s_containedQuarksCode(pdg); i > 0; i /= 10)
 {
    quarks.push_back(i % 10);
 }
 return quarks; 
}

 int CustomPDGParser::s_containedQuarksCode(int pdg)
{
 int pdgAbs=abs(pdg);
 if(s_isRBaryon(pdg))
   return pdgAbs / 10 % 1000;

 if(s_isRMeson(pdg))
   return pdgAbs / 10 % 100;

 if(s_isMesonino(pdg))
   return pdgAbs / 10 % 1000 % 10;

 if(s_isSbaryon(pdg))
   return pdgAbs / 10 % 1000 % 100;


return 0;
}